Approximately 68% of all people living with HIV reside in sub-Saharan Africa, a region with only 12% of the global population.
The country of South Africa has the highest number of people living with HIV (est. 5.6 million), more than any other place in the world.
In southern Africa, approximately 2.1 million people are receiving antiretroviral therapy, yet it is estimated that over 7.1 million HIV-infected people do not have access to antiretroviral drugs.
Thus, only 33% of HIV-positive people living in southern African are currently receiving antiretroviral therapy.
UNAIDS World AIDS Day Report 2011